新型单根大截面导线在输电线路的应用研究

Analysis on Application of Newtype Energy-saving Conductor with Large Section in Transmission Lines

[目的]为解决重载的220 kV输电线路损耗较大的问题。[方法]基于现今大截面导线技术与新材料的发展,提出了在重载的220 kV输电线路采用新型单根大截面导线以取代常规双分裂的导线型式的技术构想。重载的220 kV输电线路采用新型单根大截面节能导线,可以极大的节省电能损耗,降低年费用。[结果]以输送容量较高的塔峰-临武220k V新建线路工程为例,对比分析了新型大截面单导线与常规双分裂导线在电气、机械特性等方面的技术差异,并采用年费用法评价了经济性。[结论]计算结果论证了在重载线路采用新型大截面单导线取代双分裂导线的技术方案的可行性,为大截面导线的推广应用提供了参考。

[Introduction]In order to solve the problem of heavy load 220 kV transmission line loss. [Methods]Based on the development of large cross-section conductor technology and new materials, a new type of single large cross-section conductor was proposed to replace the conventional double split conductor in the heavy-duty 220 kV transmission line. The 220 kV transmission line with heavy load adopts a new type of single large section energy-saving conductor, which can greatly save power loss and reduce annual cost. [Results]Taking the 220 kV new transmission line project from Tafeng to Linwu with high transmission capacity as an example, the technical differences between the new large section single conductor and the conventional double bundle conductor in terms of electrical and mechanical characteristics are compared and analyzed, and the economy is evaluated by using the annual cost method. [Conclusion]The calculation results demonstrate the feasibility of using new large section single conductor instead of double bundle conductor in heavy load line, and provide reference for the popularization and application of large section conductor.